I have a web application done in c#, when I start it from visual studio, it works without problems, however when I try to upload it to IIS and open it via localhost it gives me this problem.
What I have tried:
Googling I found possible solutions, i.e. changing the value of the variable from development to another, however it didn't work, I even tried to delete the variable, but nothing, it didn't work out. Would someone be kind enough to point me to a possible solution? Thanks: D